Sinkhole distribution and density of Columbia Quadrangle, Monroe and St. Clair Counties, Illinois

Abstract

Relief shown by contours and spot heights"Geology based on field work by S.V. Panno, J.C. Angel, D.O. Nelson, and C.P. Weibel, 2000.""Digital cartography by J. Domier, D. Nelson, M. Jones, M. Widener, S. Geegan, and S. Radil, Illinois State Geological Survey."Includes text, 1 location map with index diagram, and 2 aerial photosIncludes bibliographical references (p. 5-6 of text